Anthony Weiner, a former congressman and mayoral candidate, exits federal court after his sentencing, in New York, Sept. 25, 2017. Weiner, who became caught up in a scandal over his exchange of lewd texts with a 15-year-old girl, was sentenced on Monday to 21 months in prison. He had pleaded guilty to one count of transferring obscene material to a minor, and had faced up to 10 years in prison. (John Taggart/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate, arriving at federal court for his sentencing, in New York, Sept. 25, 2017. Weiner, who became caught up in a scandal over his exchange of lewd texts with a 15-year-old girl, was sentenced on Monday to 21 months in prison. He had pleaded guilty to one count of transferring obscene material to a minor, and had faced up to 10 years in prison. (John Taggart/The New York Times/Fotoarena)

FILE -- Anthony Weiner, a former congressman and mayoral candidate who pleaded guilty to exchanging lewd messages with a 15-year-old girl, is seen through reflections in windows as he arrives for his sentencing at federal court in New York, Sept. 25, 2017. The federal Bureau of Prisons will weigh multiple factors in deciding WeinerÕs destination for his sentence of 21 months in prison. (John Taggart/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate, arriving at federal court for his sentencing, in New York, Sept. 25, 2017. Weiner, who became caught up in a scandal over his exchange of lewd texts with a 15-year-old girl, was sentenced on Monday to 21 months in prison. He had pleaded guilty to one count of transferring obscene material to a minor, and had faced up to 10 years in prison. (John Taggart/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate, arriving at federal court for his sentencing, in New York, Sept. 25, 2017. Weiner, who became caught up in a scandal over his exchange of lewd texts with a 15-year-old girl, was sentenced on Monday to 21 months in prison. He had pleaded guilty to one count of transferring obscene material to a minor, and had faced up to 10 years in prison. (John Taggart/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate who pleaded guilty to exchanging lewd messages with a 15-year-old girl, arrives for his sentencing at federal court in New York, Sept. 25, 2017. The federal Bureau of Prisons will weigh multiple factors in deciding WeinerÕs destination for his sentence of 21 months in prison. (John Taggart/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate, arriving at federal court for his sentencing, in New York, Sept. 25, 2017. Weiner, who became caught up in a scandal over his exchange of lewd texts with a 15-year-old girl, was sentenced on Monday to 21 months in prison. He had pleaded guilty to one count of transferring obscene material to a minor, and had faced up to 10 years in prison. (John Taggart/The New York Times/Fotoarena)

FILE ? Anthony Weiner with his wife, Huma Abedin, leaving court after a proceeding in their divorce case in New York, Sept. 13, 2017. The government asked a judge to sentence Weiner to a prison term of 21 to 27 months for his conviction in a sexting case. (Anthony Lanzilote/The New York Times/Fotoarena)

Anthony Weiner and his now-estranged wife, Huma Abedin, leave a courthouse in Manhattan after a divorce hearing, in New York, on Sept. 13, 2017. Weiner, the former Democratic congressman, asked a judge on Wednesday to spare him a prison sentence for his online exchanges with a teenage girl, citing his "profound" regret for the incident. (Anthony Lanzilote/The New York Times/Fotoarena)

FILE -- Anthony Weiner and his now-estranged wife, Huma Abedin, leave a courthouse in Manhattan after a divorce hearing on Sept. 13, 2017. Lawyers for Weiner suggested on Thursday that the teenager with whom he exchanged lewd texts and images was motivated by money and a desire to influence the presidential election. (Anthony Lanzilote/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate, exits federal court after appearing to face charges, in New York, May 19, 2017. Weiner plead guilty to a charge of transferring obscene material to a minor in a federal courtroom Friday after surrendering to the FBI earlier. (Christopher Lee/The New York Times/Fotoarena)

Anthony Weiner, a former congressman and mayoral candidate, exits federal court after appearing to face charges, in New York, May 19, 2017. Weiner plead guilty to a charge of transferring obscene material to a minor in a federal courtroom Friday after surrendering to the FBI earlier. (Christopher Lee/The New York Times/Fotoarena)

FILE -- Brooklyn's Metropolitan Detention Center, which is considered an administrative facility that can hold inmates of all security levels, in New York, March 7, 2017. The federal Bureau of Prisons will weigh multiple factors in deciding WeinerÕs destination for his sentence of 21 months in prison. (Todd Heisler/The New York Times/Fotoarena)

FILE-- Anthony Weiner, then a mayoral candidate, speaks to reporters in New York, Aug. 1, 2013. Weiner will plead guilty to a single charge of transferring obscene material to a minor in a federal courtroom on May 19, 2017, pursuant to a plea agreement with the U.S. attorneyÕs office in Manhattan, one of two people who have been briefed on the matter and asked not to be identified said. Weiner surrendered to the FBI early that morning. (Eric Thayer/The New York Times/Fotoarena)

FILE-- Then New York City Mayoral candidate Anthony Weiner, with his wife Huma Abedin, during a news conference where he addressed revelations that he continued sending raunchy images of himself in online chats after his resignation from Congress in 2011, at the offices of Gay MenÕs Health Crisis in New York, July 23, 2013. Weiner will plead guilty to a single charge of transferring obscene material to a minor in a federal courtroom on May 19, 2017, pursuant to a plea agreement with the U.S. attorneyÕs office in Manhattan, one of two people who have been briefed on the matter and asked not to be identified said. Weiner surrendered to the FBI early that morning. (Michael Appleton/The New York Times/Fotoarena)